you correctly wrote in the opener: $message->replace(Type=>'multipart/mixed');, and this indeed **works**

No, that's not correct! It creates multipart/mixed with three parts, and it should be multipart/mixed with two parts one of which multipart/alternative and other is attachment.

In reply to Re^4: MIME::Lite and Multipart by zwon
in thread MIME::Lite and Multipart by Analog

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